BREIT, D. Splitting-type variational problems with x-dependent exponents. Annales Fennici Mathematici, [S. l.], v. 36, n. 1, p. 279–289, 2011. DOI: 10.5186/aasfm.2011.3617. Disponível em: https://afm.journal.fi/article/view/135349. Acesso em: 25 nov. 2024.